diff options
Diffstat (limited to 'bitbake/lib/bb/parse/parse_py/ConfHandler.py')
-rw-r--r-- | bitbake/lib/bb/parse/parse_py/ConfHandler.py | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/bitbake/lib/bb/parse/parse_py/ConfHandler.py b/bitbake/lib/bb/parse/parse_py/ConfHandler.py new file mode 100644 index 0000000000..41ef96d557 --- /dev/null +++ b/bitbake/lib/bb/parse/parse_py/ConfHandler.py | |||
@@ -0,0 +1,199 @@ | |||
1 | #!/usr/bin/env python | ||
2 | # ex:ts=4:sw=4:sts=4:et | ||
3 | # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- | ||
4 | """class for handling configuration data files | ||
5 | |||
6 | Reads a .conf file and obtains its metadata | ||
7 | |||
8 | Copyright (C) 2003, 2004 Chris Larson | ||
9 | Copyright (C) 2003, 2004 Phil Blundell | ||
10 | |||
11 | This program is free software; you can redistribute it and/or modify it under | ||
12 | the terms of the GNU General Public License as published by the Free Software | ||
13 | Foundation; either version 2 of the License, or (at your option) any later | ||
14 | version. | ||
15 | |||
16 | This program is distributed in the hope that it will be useful, but WITHOUT | ||
17 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | ||
18 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. | ||
19 | |||
20 | You should have received a copy of the GNU General Public License along with | ||
21 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple | ||
22 | Place, Suite 330, Boston, MA 02111-1307 USA.""" | ||
23 | |||
24 | import re, bb.data, os, sys | ||
25 | from bb import debug, fatal | ||
26 | from bb.parse import ParseError | ||
27 | |||
28 | #__config_regexp__ = re.compile( r"(?P<exp>export\s*)?(?P<var>[a-zA-Z0-9\-_+.${}]+)\s*(?P<colon>:)?(?P<ques>\?)?=\s*(?P<apo>['\"]?)(?P<value>.*)(?P=apo)$") | ||
29 | __config_regexp__ = re.compile( r"(?P<exp>export\s*)?(?P<var>[a-zA-Z0-9\-_+.${}/]+)(\[(?P<flag>[a-zA-Z0-9\-_+.]+)\])?\s*((?P<colon>:=)|(?P<ques>\?=)|(?P<append>\+=)|(?P<prepend>=\+)|(?P<predot>=\.)|(?P<postdot>\.=)|=)\s*(?P<apo>['\"]?)(?P<value>.*)(?P=apo)$") | ||
30 | __include_regexp__ = re.compile( r"include\s+(.+)" ) | ||
31 | |||
32 | def init(data): | ||
33 | if not bb.data.getVar('TOPDIR', data): | ||
34 | bb.data.setVar('TOPDIR', os.getcwd(), data) | ||
35 | if not bb.data.getVar('BBPATH', data): | ||
36 | bb.data.setVar('BBPATH', os.path.join(sys.prefix, 'share', 'bitbake'), data) | ||
37 | |||
38 | def supports(fn, d): | ||
39 | return localpath(fn, d)[-5:] == ".conf" | ||
40 | |||
41 | def localpath(fn, d): | ||
42 | if os.path.exists(fn): | ||
43 | return fn | ||
44 | |||
45 | localfn = None | ||
46 | try: | ||
47 | localfn = bb.fetch.localpath(fn, d) | ||
48 | except bb.MalformedUrl: | ||
49 | pass | ||
50 | |||
51 | if not localfn: | ||
52 | localfn = fn | ||
53 | return localfn | ||
54 | |||
55 | def obtain(fn, data = bb.data.init()): | ||
56 | import sys, bb | ||
57 | fn = bb.data.expand(fn, data) | ||
58 | localfn = bb.data.expand(localpath(fn, data), data) | ||
59 | |||
60 | if localfn != fn: | ||
61 | dldir = bb.data.getVar('DL_DIR', data, 1) | ||
62 | if not dldir: | ||
63 | debug(1, "obtain: DL_DIR not defined") | ||
64 | return localfn | ||
65 | bb.mkdirhier(dldir) | ||
66 | try: | ||
67 | bb.fetch.init([fn]) | ||
68 | except bb.fetch.NoMethodError: | ||
69 | (type, value, traceback) = sys.exc_info() | ||
70 | debug(1, "obtain: no method: %s" % value) | ||
71 | return localfn | ||
72 | |||
73 | try: | ||
74 | bb.fetch.go(data) | ||
75 | except bb.fetch.MissingParameterError: | ||
76 | (type, value, traceback) = sys.exc_info() | ||
77 | debug(1, "obtain: missing parameters: %s" % value) | ||
78 | return localfn | ||
79 | except bb.fetch.FetchError: | ||
80 | (type, value, traceback) = sys.exc_info() | ||
81 | debug(1, "obtain: failed: %s" % value) | ||
82 | return localfn | ||
83 | return localfn | ||
84 | |||
85 | |||
86 | def include(oldfn, fn, data = bb.data.init()): | ||
87 | if oldfn == fn: # prevent infinate recursion | ||
88 | return None | ||
89 | |||
90 | import bb | ||
91 | fn = bb.data.expand(fn, data) | ||
92 | oldfn = bb.data.expand(oldfn, data) | ||
93 | |||
94 | from bb.parse import handle | ||
95 | try: | ||
96 | ret = handle(fn, data, 1) | ||
97 | except IOError: | ||
98 | debug(2, "CONF file '%s' not found" % fn) | ||
99 | |||
100 | def handle(fn, data = bb.data.init(), include = 0): | ||
101 | if include: | ||
102 | inc_string = "including" | ||
103 | else: | ||
104 | inc_string = "reading" | ||
105 | init(data) | ||
106 | |||
107 | if include == 0: | ||
108 | bb.data.inheritFromOS(data) | ||
109 | oldfile = None | ||
110 | else: | ||
111 | oldfile = bb.data.getVar('FILE', data) | ||
112 | |||
113 | fn = obtain(fn, data) | ||
114 | bbpath = [] | ||
115 | if not os.path.isabs(fn): | ||
116 | f = None | ||
117 | vbbpath = bb.data.getVar("BBPATH", data) | ||
118 | if vbbpath: | ||
119 | bbpath += vbbpath.split(":") | ||
120 | for p in bbpath: | ||
121 | currname = os.path.join(bb.data.expand(p, data), fn) | ||
122 | if os.access(currname, os.R_OK): | ||
123 | f = open(currname, 'r') | ||
124 | abs_fn = currname | ||
125 | debug(1, "CONF %s %s" % (inc_string, currname)) | ||
126 | break | ||
127 | if f is None: | ||
128 | raise IOError("file not found") | ||
129 | else: | ||
130 | f = open(fn,'r') | ||
131 | debug(1, "CONF %s %s" % (inc_string,fn)) | ||
132 | abs_fn = fn | ||
133 | |||
134 | if include: | ||
135 | bb.parse.mark_dependency(data, abs_fn) | ||
136 | |||
137 | lineno = 0 | ||
138 | bb.data.setVar('FILE', fn, data) | ||
139 | while 1: | ||
140 | lineno = lineno + 1 | ||
141 | s = f.readline() | ||
142 | if not s: break | ||
143 | w = s.strip() | ||
144 | if not w: continue # skip empty lines | ||
145 | s = s.rstrip() | ||
146 | if s[0] == '#': continue # skip comments | ||
147 | while s[-1] == '\\': | ||
148 | s2 = f.readline()[:-1].strip() | ||
149 | lineno = lineno + 1 | ||
150 | s = s[:-1] + s2 | ||
151 | feeder(lineno, s, fn, data) | ||
152 | |||
153 | if oldfile: | ||
154 | bb.data.setVar('FILE', oldfile, data) | ||
155 | return data | ||
156 | |||
157 | def feeder(lineno, s, fn, data = bb.data.init()): | ||
158 | m = __config_regexp__.match(s) | ||
159 | if m: | ||
160 | groupd = m.groupdict() | ||
161 | key = groupd["var"] | ||
162 | if "exp" in groupd and groupd["exp"] != None: | ||
163 | bb.data.setVarFlag(key, "export", 1, data) | ||
164 | if "ques" in groupd and groupd["ques"] != None: | ||
165 | val = bb.data.getVar(key, data) | ||
166 | if val == None: | ||
167 | val = groupd["value"] | ||
168 | elif "colon" in groupd and groupd["colon"] != None: | ||
169 | val = bb.data.expand(groupd["value"], data) | ||
170 | elif "append" in groupd and groupd["append"] != None: | ||
171 | val = "%s %s" % ((bb.data.getVar(key, data) or ""), groupd["value"]) | ||
172 | elif "prepend" in groupd and groupd["prepend"] != None: | ||
173 | val = "%s %s" % (groupd["value"], (bb.data.getVar(key, data) or "")) | ||
174 | elif "postdot" in groupd and groupd["postdot"] != None: | ||
175 | val = "%s%s" % ((bb.data.getVar(key, data) or ""), groupd["value"]) | ||
176 | elif "predot" in groupd and groupd["predot"] != None: | ||
177 | val = "%s%s" % (groupd["value"], (bb.data.getVar(key, data) or "")) | ||
178 | else: | ||
179 | val = groupd["value"] | ||
180 | if 'flag' in groupd and groupd['flag'] != None: | ||
181 | # bb.note("setVarFlag(%s, %s, %s, data)" % (key, groupd['flag'], val)) | ||
182 | bb.data.setVarFlag(key, groupd['flag'], val, data) | ||
183 | else: | ||
184 | bb.data.setVar(key, val, data) | ||
185 | return | ||
186 | |||
187 | m = __include_regexp__.match(s) | ||
188 | if m: | ||
189 | s = bb.data.expand(m.group(1), data) | ||
190 | # debug(2, "CONF %s:%d: including %s" % (fn, lineno, s)) | ||
191 | include(fn, s, data) | ||
192 | return | ||
193 | |||
194 | raise ParseError("%s:%d: unparsed line: '%s'" % (fn, lineno, s)); | ||
195 | |||
196 | # Add us to the handlers list | ||
197 | from bb.parse import handlers | ||
198 | handlers.append({'supports': supports, 'handle': handle, 'init': init}) | ||
199 | del handlers | ||